Email delivery doesn’t end when your API returns a 200 OK response. Modern transactional email systems depend on webhooks to receive delivery events, process bounces, detect failures, and build reliable observability. This engineering guide explains how email webhooks work, how to process events safely, and how production SaaS teams build secure, scalable webhook architectures.
IP warming isn’t about gradually sending more emails—it’s about building measurable trust with mailbox providers. This engineering guide explains how sender reputation develops, why IP warming fails, how to create safe warm-up schedules, and how modern SaaS teams successfully scale transactional email infrastructure without hurting deliverability.
Should you choose a dedicated IP or a shared IP for transactional email? This engineering guide explains the real trade-offs behind sender reputation, IP warming, deliverability, infrastructure ownership, and operational complexity. Learn when shared IPs outperform dedicated IPs, when to migrate, and how modern SaaS teams build reliable email infrastructure.
